Kind of a lengthy video. But came across this on YouTube today. As a Hemi owner it kind of scares me. What do you think?
Hemi fatal flaw! What are your thoughts on this?
bigunit54
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Thanks for sharing. Interesting and it does seem he makes some very valid points. Another interesting point is it seems the very original 03 and 04s don't seem to have the cam issue compared to later model years like 2010 and up? And I have 2 hemi's. An old one and a new one[emoji50]
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Yeah but the old ones had valve seat issues. Every engine has its problems. You have options- sit and worry and be paranoid, get it fixed, or just have fun. It'sa very small number of failures for how many of these engines are out there.
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Is this a legit issue??? question for the highly technical guys on this site!
I would have assumed that his analysis/explanation is so simple that any decent engineer would know this and that they have actually done their homework in the form of directed oil passages or such. Not that I design engines but I'm a fair mechanical inclined person and I wouldn't have committed such simple fallacy, I hope
Other engines with overhead cams do survive as oil is channeled directly to the faces where the lubricant is needed and not counting on oil being splashed onto a cam, or am I missing something?
My RT is close to 40K and so far nothing to comment in this or any other matter, oh maybe the starting clatter
So Don and others do we have a real problem, should be more than a few engines before calling it a problem IMHO
Preben
I would have assumed that his analysis/explanation is so simple that any decent engineer would know this and that they have actually done their homework in the form of directed oil passages or such. Not that I design engines but I'm a fair mechanical inclined person and I wouldn't have committed such simple fallacy, I hope
Other engines with overhead cams do survive as oil is channeled directly to the faces where the lubricant is needed and not counting on oil being splashed onto a cam, or am I missing something?
My RT is close to 40K and so far nothing to comment in this or any other matter, oh maybe the starting clatter
So Don and others do we have a real problem, should be more than a few engines before calling it a problem IMHO
Preben
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I'm not nervous or paranoid either...thus why I encouraged my wife to buy a hemi. Lol. This issue is in the back of my mind tho. A year ago helped my nephew with his 2012 Ram and pulled engine to replace cam and lifters. So I have been there and seen it. A search will bring up alot of posts and videos on the subject. Could be why oil viscosity was changed from a 30 to a 20 weight way back when...? . .
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Watching the video, the fellow seems to raise some plausible points. If we compare the number of failed engines to the overall number of engines produced, I can't imagine that the percentage is very high. Granted, if one ends up being the proud owner of a Hemi that fails out of warranty, having been treated well, it would not sit well with most folks.
The Hemi in my '04 Durango dropped a valve at 39K for the original owner. The 7/70 PT warranty took care of the $4800 bill for him minus the $100 deductible. To date, my '14 Charger R/T at just over 50K, purrs like a kitten. I have the Lifetime Max Care, so I figure if/when it happens, it will cost me $100, or the next owner will have to deal with it.
Don
The Hemi in my '04 Durango dropped a valve at 39K for the original owner. The 7/70 PT warranty took care of the $4800 bill for him minus the $100 deductible. To date, my '14 Charger R/T at just over 50K, purrs like a kitten. I have the Lifetime Max Care, so I figure if/when it happens, it will cost me $100, or the next owner will have to deal with it.
Don
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I've got 94k on my 07 Hemi and 43k on the 14. Both run like a top! Not worried about either really.
The basic architecture of the gen 3 has been around for what, 17 years? It's found its way into a LOT of vehicles...so maybe there are millions in service? If this was 2005, I'd probably watch with more interest, but seriously this video is filled with WGAS info. It's like someone in the late 1990's proclaiming the siamesed exhaust ports on the 30 year old gen II small block Chevy are a weak link...yeah, we get its not the best engineering solution and was corrected with the LS series, but that generation of SBC was still an outstanding engine for the era. In other words, this is someone in a hyperbolic bubble nitpicking a design at the end of its life cycle, not breaking news.
Good points. What does WGAS stand for?
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Very interesting. How many people actually have had camshaft failure? I only have 31k on my 2017 so so far so good. I pull strong and haven't seem to have lost any power.
I have heard that the Cylinder deactivation system can cause uneven wear on the camshaft and after I read that I turned off Eco mode which on mine the Cylinder deactivation system doesn't kick in. You can really feel and hear when it kicks in and when you press on the throttle when it turns off. Since I turned off ECO mode it never turns on.
I don't run Sports mode all the time either, I use it once in a while when I'm feeling ornery LOL. But usually I just drive around in ECO OFF and Sports OFF. I like how the engine feels there for comfort.
I worry slightly about this as I gotta decide if I'm keeping it or getting another one this year when my lease runs out.
I just have not read many people in here at all taking about cam issues.
I have heard that the Cylinder deactivation system can cause uneven wear on the camshaft and after I read that I turned off Eco mode which on mine the Cylinder deactivation system doesn't kick in. You can really feel and hear when it kicks in and when you press on the throttle when it turns off. Since I turned off ECO mode it never turns on.
I don't run Sports mode all the time either, I use it once in a while when I'm feeling ornery LOL. But usually I just drive around in ECO OFF and Sports OFF. I like how the engine feels there for comfort.
I worry slightly about this as I gotta decide if I'm keeping it or getting another one this year when my lease runs out.
I just have not read many people in here at all taking about cam issues.
Haha. I see. I’m not up on the acronyms too much. Yeah the lockdowns and crap has everyone feeling a bit angry I think. In regards to the video as I said it just came on my YouTube suggestions. I’ve been watching a lot of Kenny Powers clips and goonzquad videos and vtuned garage videos so not sure why this popped up, but I hadn’t heard of this before so thought I’d share.
Yeah I leave eco off in ours as well. Only time I turn it on is long trips on the interstate. Rpm and oil sling is pretty good then. And yes as you say I haven’t seen anyone on here have a camshaft issue. When you google it there are posts in other forums about it. But as we said early I think we are talking about a very small percentage of these engines. If I was you I wouldn’t think about it at all when deciding on your lease.
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Eco on or off has nothing to do with this failure. It is simple lack of lubrication.
Camshaft failure across all engines is a very low failure rate. For years engines were built with non roller lifters that ran tight on the lobes...metal running flat on metal with no bearing per say. And most of these engines wouldn't quit. For the high performance engines roller lifters were always the way to go at an added cost of course. Roller lifters should reduce friction and wear and decrease drag of the lifter on the camshaft as it rotates. In theory the hemi roller lifter camshaft is far superior to the flat non roller lifter design.
So why are these camshafts failing at low service hours and proper maintenance? If you have an interest in building engines and you find a problem it is usually readily visible to see what happened. The question is why it happened.
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Camshaft failure across all engines is a very low failure rate. For years engines were built with non roller lifters that ran tight on the lobes...metal running flat on metal with no bearing per say. And most of these engines wouldn't quit. For the high performance engines roller lifters were always the way to go at an added cost of course. Roller lifters should reduce friction and wear and decrease drag of the lifter on the camshaft as it rotates. In theory the hemi roller lifter camshaft is far superior to the flat non roller lifter design.
So why are these camshafts failing at low service hours and proper maintenance? If you have an interest in building engines and you find a problem it is usually readily visible to see what happened. The question is why it happened.
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Speaking of YouTube.... search hemi camshaft for vids
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